下顎骨體部 骨折除術에 依한 下顎前突症의 治驗例

SURGICAL CORRECTION OF MANDIBULAR PROGNATHISM BY OSTECTOMY IN THE MANDIBULAR BODY

This is to report a case of extreme mandibular prognathism corrected by bilateral ostectomy in the body of the mandible. After the precise clinical, cephalometric and model analysis, the 27-year-old female patient was treated by removal of a section of bone from both mandibular second molar region. The results are as follows; 1. The postoperative cephalometric analysis reveals remarkable reduction of mandibular body length, ratio of mandibular body to anterior cranial base, SNB, ANB, SNPo, anterior face height. The surgical correction resulted in satisfactory cosmetic and functional improvement without any noticeable complications. 2. To control the axial inclination of upper and lower anterior teeth, minor teeth irregularities and to eliminate the premature contact, fixed type orthodontic appliances with occlusal equilibration have been performed for about one year. The prosthodontic restoration was also required for the edentulous lower posterior region to obtain better oral rehabilitation.